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Welcome to Jersey County ...

Time Zone: Jersey County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Jerseyville is the Seat for Jersey County.

Jersey County was founded in 1839 and was created by taking area from Greene County.

From the Census Estimates for 2019, <1> Jersey had a population of 21,773 people. This is a decrease of 5.31% since the last Census (which gave a population of 22,995 people in 2010).

At the time of the 2010 Census, Jersey represented 0.18% of the total population of Illinois.

Below are some of the communities located in Jersey County:

  • Elsah
    (8 miles [12.9 km] to the south)
    • Elsah is located in Jersey County (IL)
    • Jump to our Gazetteer entry for Elsah
    • Population from the 2020 Census: 604 people
    • Jump to TripAdvisor's Tourism page for Elsah <2>
  • Fidelity
    (10 miles [16.1 km] to the northeast)
  • Fieldon
    (8 miles [12.9 km] to the west)
  • Grafton
    (9 miles [14.5 km] to the southwest)
  • Jerseyville
    (2 miles [3.2 km] to the north)
  • Otterville
    (3 miles [4.8 km] to the southwest)
    • Otterville is located in Jersey County (IL)
    • Jump to our Gazetteer entry for Otterville
    • Population from the 2020 Census: 116 people

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.